I don't think so. These progs use either changed Modified Date or Bitsum calculations to see if a file has changed then copy the entire file. So if you retag all your songs then they will be "different" and hence synced by re copying the entire song.
I used to use SyncToy but had all sorts of issues with the timestamps being different and it leaves little synctoy files all through your file structure so I moved to Free File Sync and have not had any issues.
I use Free File Sync as well. If memory serves, I think I gave it a go after reading a positive comment from jmone, so nice one dude. Works well for me. The only thing I'd say to noobs is to watch the install.
I'd suggest that you don't do an install if you've had a few beers or are dog tired. It's "free" because it's supported by co-packaged software. When I do an AV scan the install package comes up fine and so do subsequent system scans. However the anti-malware software picks up "potentially unwanted programs" in the installer. It could possibly be a nuisance for a user. You have the option of not loading this co-packaged software but the install routine can change or the selections use double negatives or other word tricks to get you to unwittingly install the extra stuff.
Given that it's "free", I accept what's going and just make sure I'm careful. The co-bundled software is also declared and explained, so it's not as if the installer tries to work covertly. So, I'm OK with it.
I went for a wander to try and find software that syncs metadata only, if that's all that's changed. I came up with a lot of not much. I did find an itunes targetted package called, SuperSync, that claims to update metadata. So, at least there is some intelligent thought going on somewhere.
If a sync program like this is available for a Windows OS, I'd be all ears. Until then FFS will do for me.